<form action="<?php e_action("picAddSubmit"); ?>" method="post"  enctype="multipart/form-data">
    <input type="hidden" name="gopen_id" value="<?php echo $r['gopen_id']?>">
    <fieldset>
        <legend>图片信息</legend>
        <label for="file">图片文件</label>
        <input type="file" name="file" id="file" placeholder="请选择您需要的图片"><br/>
        <label for="thumb">是否为缩略图</label>
        <input type="checkbox" name="thumb" id="thumb" value="1"><br/>
    </fieldset>
    <input type="submit">
</form>